2.1Master equalizer in sound reinforcement systems
This is the
Fig. 2.1: The
Please note the following points to achieve optimum results:
Practice has shown that it will be useful to listen to some “unprocessed” music and speech material before you start equalizing your sound reinforcement system. If any distortion can be heard, try to eliminate it within the system. Speaker placement is also of importance. No equalizer can improve a system sound that lacks transparency due to reflections from walls and ceiling. Often, drastic improvements can be achieved by modifying speaker placement and alignment.
If you are using an active
Once this basic setting has been made, you can continue to
Please remember:
A linear response curve is not desirable for all kinds of application. For example, intelligibility is more important in speech applications: here, you should apply a slight
In general, extremely low and high frequencies are transmitted with much lower amplitudes. There is no sense in “forcing” a small
+You should always take the physical limits of your system into account, no matter which settings you choose.
Once the system has been adjusted as precisely as possible to produce the desired response curve, you should walk around the room to get an impression of the sound produced in various places. Remember to make regular breaks during these listening tests and to play back various music and speech programs, so that you get a feel for the response characteristics of your system and of the room.
2. APPLICATIONS | 9 |